Year	annual %
1962	2.322530455505742
1963	2.3410232723279236
1964	2.8482345267242835
1965	2.873505006493552
1966	3.5744260351365256
1967	2.329682164014855
1968	2.2907665166921447
1969	3.3383671379969257
1970	3.7094041172531362
1971	4.664180022913939
1972	6.413089166541425
1973	13.387368046760258
1974	20.258397841619825
1975	9.618618619938331
1976	9.734643373870945
1977	10.256483955127422
1978	8.417213279000578
1979	13.004685824598766
1980	13.898534825435256
1981	9.29050168643547
1982	7.90744147762004
1983	8.649172498779478
1984	9.546317183757544
1985	7.193785444529425
1986	6.569952894922309
1987	8.842020422323088
1988	9.060963477006354
1989	8.593756575454691
1990	10.652751293411072
1991	15.132390367979667
1992	11.915633250761104
1993	11.605429309027535
1994	15.339598343417975
1995	10.679005567444506
1996	8.798385813484344
1997	7.281112053145662
1998	6.931402668889049
1999	6.731820944220871
2000	7.207762797170972
2001	6.012792433817381
2002	4.830917874396135
2003	5.53933744651502
2004	6.951992680864663
2005	6.479202402556524
2006	8.343721126029521
2007	7.063421716942344
2008	9.407491822381402
2009	2.8806517685043858
2010	6.9233633781208965
2011	7.636574135158966
2012	4.7919228446595525
2013	3.576711128147913
2014	3.331756917033431
2015	2.7583920627998566
2016	2.7071912966317484
2017	3.824972328099193
2018	3.5975738926426857
2019	3.061879454583277
2020	2.573040445058993
2021	5.772426336908978
2022	8.241191953236054
2023	4.620073429263293